Messages in this thread Patch in this message | | | Date | Thu, 27 May 2010 09:17:17 -0500 (CDT) | From | Christoph Lameter <> | Subject | Re: [BUG] slub crashes on dma allocations |
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So S390 has NUMA and the minalign is allowing very small slabs of 8/16/32 bytes?
Try this patch
From: Christoph Lameter <cl@linux-foundation.org> Subject: SLUB: Allow full duplication of kmalloc array for 390
Seems that S390 is running out of kmalloc caches.
Increase the number of kmalloc caches to a safe size.
Signed-off-by: Christoph Lameter <cl@linux-foundation.org>
--- include/linux/slub_def.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6/include/linux/slub_def.h =================================================================== --- linux-2.6.orig/include/linux/slub_def.h 2010-05-27 09:14:16.000000000 -0500 +++ linux-2.6/include/linux/slub_def.h 2010-05-27 09:14:26.000000000 -0500 @@ -140,7 +140,7 @@ struct kmem_cache { #ifdef CONFIG_ZONE_DMA #define SLUB_DMA __GFP_DMA /* Reserve extra caches for potential DMA use */ -#define KMALLOC_CACHES (2 * SLUB_PAGE_SHIFT - 6) +#define KMALLOC_CACHES (2 * SLUB_PAGE_SHIFT) #else /* Disable DMA functionality */ #define SLUB_DMA (__force gfp_t)0
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